Structural and spectral study of platinum(II) complexes of pyridil bis{3-piperidyl-, bis{hexamethyleneiminyl-, bis{N(4)-diethyl- and bis{N(4)-dipropylthiosemicarbazones}

Abstract

Representative platinum(II) complexes of pyridil bis(N(4)-substituted thiosemicarbazones), in which the substituents replacing the NH 2 of the thiosemicarbazone moieties are piperidyl, H 2Plpip; hexamethyleneiminyl, H 2Plhexim; diethylamino, H 2Pl4DE; and dipropylamino, H 2Pl4DP, have been synthesized and characterized with IR, electronic, mass, and 1H NMR spectra. Crystal structures have been solved for two platinum(II) complexes formed from H 2Pl4DP. [Pt(Pl4DP)] has square-planar N 2S 2 coordination (i.e. imine nitrogen and thiolato sulfur atoms) and [Pt 2(Pl4DP)Cl 2] has two PtNNSCl centers with the pyridine nitrogen, imine nitrogen and thiolato sulfur atoms coordinated.